Railroad tracks are made from segments L = 65 m long at T = 20° C. When the tracks are laid, the engineers leave gaps of width l between adjacent segments to allow for thermal expansion. The coefficient of linear expansion is α = 12 × 10^{6} °C^{1} and engineers design the tracks to withstand temperatures of T_{c} = 39.5 degrees.
A) Enter an expression, in terms of given variables, for the minimum gap distance l the engineers must leave for a track rated at temperature T_{c}.
l=
B)What is the minimum gap distance in meters?
C)


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